diff --git a/theme-github-dark.css b/theme-github-dark.css
index bb97c13..37ffe32 100755
--- a/theme-github-dark.css
+++ b/theme-github-dark.css
@@ -22,6 +22,7 @@
   --is-dark-theme: true;
   --color-blue: #539bf5;
   --color-input-background: #22272e;
+  --color-header-bar: #373e47;
 
   /* code editor colors are set in https://github.com/go-gitea/gitea/blob/f5b300ea77081a1b78ac044cb1c0f9225538d091/web_src/js/features/codeeditor.js#L82-L97.  */
   /* monaco editor dark theme is toggled via variable `--is-dark-theme` */